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