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