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