One vertex per element, one color per generator, with an edge from x to x·s.
(2,6)(4,11)(7,15)(8,12)(9,13)(14,16)(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)(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)(1,2)(3,7)(4,12)(5,8)(6,11)(9,14)(10,16)(13,15)(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(1,3,5,10)(2,7,8,16)(4,13,11,9)(6,14,12,15)(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)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.