One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,8)(5,9)(6,10)(11,14)(12,15)(13,16)(17,18)(19,26)(20,29)(21,24)(22,25)(23,31)(27,30)(28,32)(33,34,39,43)(35,40,44,48)(36,38,42,47)(37,46,45,41)(3,10)(4,12)(6,7)(8,15)(17,19)(18,21)(20,27)(22,24)(23,30)(25,26)(28,31)(29,32)(35,44)(37,45)(40,48)(41,46) involution — undirected(1,3)(2,6)(4,11)(5,10)(7,9)(8,13)(12,16)(14,15)(17,20)(18,23)(19,27)(21,30)(22,31)(24,28)(25,29)(26,32)(33,35,39,44)(34,40,43,48)(36,45,42,37)(38,41,47,46)(1,3)(2,7)(4,11)(5,10)(6,9)(8,14)(12,16)(13,15)(17,20)(18,23)(19,28)(21,32)(22,31)(24,27)(25,29)(26,30)(33,36)(34,38)(35,45)(37,44)(39,42)(40,41)(43,47)(46,48) involution — undirected(1,4,5,12)(2,8,9,15)(3,11,10,16)(6,13,7,14)(17,18)(19,26)(20,23)(21,24)(22,25)(27,32)(28,30)(29,31)(33,37,39,45)(34,41,43,46)(35,36,44,42)(38,40,47,48)(1,2)(3,6)(4,8)(5,9)(7,10)(11,13)(12,15)(14,16)(17,21,22,26)(18,24,25,19)(20,30,31,32)(23,28,29,27)(33,38)(34,42)(35,41)(36,43)(37,40)(39,47)(44,46)(45,48)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.