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