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