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