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)(17,18,22,28)(19,26,31,24)(20,25,34,44)(21,35,23,27)(29,42,47,38)(30,39,36,40)(32,48,46,41)(33,45,37,43)(1,2)(3,6)(4,5)(7,8)(9,11)(10,13)(12,16)(14,15)(17,19,22,31)(18,24,28,26)(20,32,34,46)(21,30,23,36)(25,41,44,48)(27,39,35,40)(29,37,47,33)(38,43,42,45)(10,14)(13,15)(17,20,22,34)(18,25,28,44)(19,29,31,47)(21,33,23,37)(24,38,26,42)(27,43,35,45)(30,46,36,32)(39,41,40,48)(2,5)(6,8)(11,16)(13,15)(17,19)(18,26)(20,29)(21,36)(22,31)(23,30)(24,28)(25,42)(27,39)(32,33)(34,47)(35,40)(37,46)(38,44)(41,43)(45,48) involution — undirected(1,3,4,7)(2,6,5,8)(17,21,22,23)(18,27,28,35)(19,30,31,36)(20,33,34,37)(24,39,26,40)(25,43,44,45)(29,46,47,32)(38,41,42,48)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.