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