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