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