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