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