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