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