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