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