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