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