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