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