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