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