One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,4)(5,8)(6,9)(7,10)(11,12)(13,14)(15,16)(17,18)(19,24)(20,26)(21,22)(23,27)(25,31)(28,30)(29,32)(33,34)(35,42)(36,45)(37,40)(38,44)(39,41)(43,47)(46,48) involution — undirected(1,3)(2,4)(5,11)(6,7)(8,12)(9,10)(13,16)(14,15)(17,19,23,22)(18,24,27,21)(20,29,31,28)(25,30,26,32)(33,35)(34,38)(36,46)(37,43)(39,44)(40,48)(41,42)(45,47)(1,2)(3,10)(4,7)(5,8)(6,9)(11,16)(12,15)(13,14)(17,20)(18,25)(19,28)(21,30)(22,29)(23,31)(24,32)(26,27)(33,36,39,37)(34,40,41,45)(35,43,44,46)(38,47,42,48)(1,2)(3,4)(5,13)(6,9)(7,10)(8,14)(11,16)(12,15)(17,20)(18,26)(19,29)(21,30)(22,28)(23,31)(24,32)(25,27)(33,35)(34,38)(36,43)(37,46)(39,44)(40,47)(41,42)(45,48) involution — undirected(1,4)(2,7)(3,9)(5,12)(6,10)(8,15)(11,13)(14,16)(17,21,23,24)(18,19,27,22)(20,30,31,32)(25,28,26,29)(33,37,39,36)(34,40,41,45)(35,43,44,46)(38,48,42,47)(1,5,6,14)(2,8,9,13)(3,11,7,15)(4,12,10,16)(17,22,23,19)(18,24,27,21)(20,29,31,28)(25,32,26,30)(33,38)(34,35)(36,47)(37,48)(39,42)(40,43)(41,44)(45,46)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.