One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,10)(4,8)(5,13)(6,9)(7,11)(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(1,2)(3,7)(4,8)(5,13)(6,9)(10,14)(11,15)(12,16)(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(1,3,6,12)(2,7,9,16)(4,11,5,14)(8,15,13,10)(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)(1,4,6,5)(2,8,9,13)(3,11,12,14)(7,15,16,10)(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.