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