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