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