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