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