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