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