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