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