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