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