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