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