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