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