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