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