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