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