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