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