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