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