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