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