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