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