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