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