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