One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,6)(5,12)(8,11)(9,15)(10,14)(13,16)(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)(2,6)(3,9,10,13)(7,15,14,16)(8,12)(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)(1,3)(2,7)(4,10)(5,13)(6,14)(8,15)(9,11)(12,16)(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.