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