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