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