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