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