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)(17,18,22,26)(19,27,29,42)(20,32,35,38)(21,36,33,25)(23,37,39,30)(24,28,41,34)(31,48,46,44)(40,47,43,45)(1,3,4,11,5,10,13,16)(2,6,8,9,7,14,12,15)(2,7)(6,14)(8,12)(9,15)(17,19,28,45,21,31,20,30,22,29,34,47,33,46,35,37)(18,23,38,48,25,40,24,27,26,39,32,44,36,43,41,42)(3,10)(6,14)(9,15)(11,16)(19,29)(23,39)(27,42)(30,37)(31,46)(40,43)(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.