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