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