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