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)(11,16)(12,14)(13,15)(17,18)(19,28)(20,32)(21,25)(22,36)(23,27)(24,31)(26,37)(29,43)(30,44)(33,41)(34,42)(35,47)(38,48)(39,45)(40,46) involution — undirected(11,12)(14,16)(17,19,22,31,23,30,37,46)(18,24,26,28,27,40,36,44)(20,29,33,45,21,34,35,48)(25,38,41,42,32,39,47,43)(2,5)(6,8)(9,11,13,12)(10,14,15,16)(17,20)(18,25)(19,29)(21,23)(22,33)(24,38)(26,41)(27,32)(28,42)(30,34)(31,45)(35,37)(36,47)(39,40)(43,44)(46,48)(1,3,4,7)(2,6,5,8)(9,12,13,11)(10,14,15,16)(17,21,23,20)(18,25,27,32)(19,29,30,34)(22,35,37,33)(24,39,40,38)(26,41,36,47)(28,43,44,42)(31,45,46,48)(10,15)(14,16)(19,30)(20,21)(24,40)(25,32)(28,44)(31,46)(33,35)(41,47) 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.