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