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