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)(19,24)(20,26)(21,27)(22,29)(23,25)(28,32)(30,31)(33,34,38,36)(35,39,41,42)(37,40,46,44)(43,47,45,48)(1,2)(3,9)(4,8)(5,6)(7,11)(10,15)(12,13)(14,16)(17,19,23,20)(18,24,25,26)(21,29,31,28)(22,30,32,27)(35,41)(39,42)(43,45)(47,48)(2,6)(7,9)(8,12)(14,15)(18,25)(19,20)(27,30)(28,29)(33,35)(34,39)(36,42)(37,43)(38,41)(40,47)(44,48)(45,46) involution — undirected(1,2)(3,7)(4,8)(5,6)(9,11)(10,14)(12,13)(15,16)(17,20,23,19)(18,26,25,24)(21,28,31,29)(22,27,32,30)(33,36,38,34)(35,42,41,39)(37,44,46,40)(43,48,45,47)(1,3,5,11)(2,7,6,9)(4,10,13,16)(8,14,12,15)(17,21)(18,27)(19,29)(20,28)(22,24)(23,31)(25,30)(26,32)(33,35)(34,39)(36,42)(37,45)(38,41)(40,48)(43,46)(44,47)(1,4,5,13)(2,8,6,12)(3,10,11,16)(7,14,9,15)(17,22,23,32)(18,28,25,29)(19,30,20,27)(21,26,31,24)(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.