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