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