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