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