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