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