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