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